Bimetallic drain fitting



May 10, 1949. H. F. REICHENBACH BIMETALLIG DRAIN FITTING Filed Dec. 6, 1945 INVENTOP HOWARD F. PEICHENBACH jmuww ATTORNEYS Patented May 10, 1949 2,469,991 BIMETALLIC DRAIN FITTING Howard F. Reichenbach, Waterbury, Conn, as-

signor rated, Waterbury,

to Chase Brass & Copper 00. Incorpo- Conn a corporation Application December 6, 1945, Serial No. 633,231 2 Glaims- (Cl. 28549) The present invention relates to improvements in drain-fittings and relates more particularly to improvements in drain-fittings of bimetallic character and which are adapted to receive drainvalves for kitchen sinks, tubs and the like.

It may be first explained that drain-fittings of the type to which the present invention relates, are provided with annular seating-flanges which project substantially-radially and which are adapted to be seated substantially-flush with the bottom surface of a sink, tub or the like, and hence are in position to be subjected to the same scouring action which is ordinarily applied to the bottom surface of the said sink or the like.

Under the conditions above referred to even the most carefully-plated drain-fitting will have the plating on its seating-flange eroded away after a very brief period of use, with the result that a very unsightly fitting results.

Efiorts have heretofore been made to remedy the defects above referred to, by providing the seating-flange of the drain-fitting with an overlay of stainless steel or the like. Such an overlay, however, has not been fully satisfactory, inasmuch as it is necessarily" relatively flimsy, as well as expensive to form and, in addition, creates inaccessible pockets in which material collects to thus produce not only unsanitary but odorous conditions.

One of the main objects of the present invention is to provide at a low cost for manufacture, a superior bimetallic drain-fitting which will resist scouring in its area mainly exposed thereto and otherwise withstand rough usage.

Another object of the present invention is to provide a superior bimetallic drain-fitting comprising a body-member of one metal and a seating-member of another metal, and which latter is so constructed and arranged as to successfully withstand scouring and which is rigidly secured to the body-member in a manner which will substantially eliminate unsanitary conditions.

With the above and other objects in View, as will appear to those skilled in the art from the present disclosure, this invention includes all features in the said disclosure which are novel over the prior art.

In the accompanying drawings, in which certain modes of carrying out the present invention are shown for illustrative purposes:

Fig. 1 is a top plan view of a bimetallic drain-fitting embodying the present invention;

Fig. 2 is a side view thereof;

Fig. 3 is a transverse sectional view taken on the line 3-3 of Fig. 1 but on a larger scale;

Fig. 4 is a top or plan view of the body-member showing the same prior to thereto of the seating-member.

Fig. 5 is a broken Fig. 6 is an underside view of the seatingmember, detached;

Fig. 7 is a broken on the line 'l-l of Fig.6; and

Fig. 8 is a broken detail sectional view showin the fragment of the body of Fig. 5 united with the fragment ofthe seating-member-of Fig. 7, just prior to the rigid attachment of the saidseparately-formed ring-like seating-member ll. The said body may be conveniently forged from brass or other suitable material and includes a relatively-large-diametered externally-threaded portion I2 and an inwardly-and-downwardly sloping portion which serves to integrally-connect the portion [2 with a relatively-small-diametered neck I4 which is also externally-threadedas shown.

At its upper end the large-diametered. portion l2 of the body-member I0 is formed with an upwardly-facing annular clamping-shoulder I5 surrounded by an annular clamping-flange I6 which slopes inwardly-and-upwardly as is especially well shown in Fig. 3.

Resting upon the clamping-shoulder I5 of the body-member Ill and held tightly thereagainst by the clamping-flange I6, is an outwardly-anddownwardly sloping attaching-flange I1 formed integral with the inner edge of the ring-like seating-member II proper before referred to. Preferably, the clamping-flange iii of the body-member It! is so very firmly engaged with the attaching-fiange ll of the seating-member II as to press the same tightly against the clampingshoulder l5 and to preclude leakage.

As is usual in the art, the neck M of the bodymember In is formed interiorly with an apertured web I8 through which drain water passes to any suitable drain pipe (not shown) which may be connected to the neck I. The threads upon the exterior of the large-diametered portion I2 of the body-member I0 provide for its attachment to a sink or the like in a manner well known in the art.

In producing the finished attained fitting illustrated in Figs. 1, 2 and 3, I preferably first form the application.

detail sectional view taken on the line 5-5 of Fig. 4 but on a larger scale;

detail sectional View takenas illustrated in Figs. 1, 2 and 3,

clamping-flange I6 as is shown in Fig. 8, after which the said clamping-flange may be spun or otherwise displaced inwardly into tight engagement with the attaching-flange I! as is illustrated inFig.3. By providing the inner ed ,Of the seatingmember I I with an outwardly-directed attachingflange such as IT, in combination with the inwardly-directed clamping-flange I6"of the body member In, the upper edge of the said body:

member is sufficiently shielded from abrasion while a t the same time remaining amply strong to the structure" in a: tightly-clamped position in'a sink or the like and 'without'creatihg sanitation hazards Preferably the jseatm memb' rf u is formed entirely" of" stainless steel or other suitable solid abrasion-resistant and corrosion-resistant mat-' rial.

The invention met he carried" out in other specific ways than those" herein setjfor th without departing from thejsp'irit and essential characteristic'ls o'f thinVeritibn', and the'present embddi merits are, therefore; to beconsidered in all hespectsasillustrative' and not restrictive, and all changes co'ii'iin g within I the meaning and equivalency range' of the appended claims are intended to be embraced therein. Iclaifi'iz I LIA imetalli'c' drain-fitting, including in com binatiorif a'b'ody-I'n'ember' formed of a diiferent metalifroh'iftlie herinafter mentioned seating member; a' flatjringflik'e seating-member formed v surmounting and rigidlyattach'e'dto the upper portion of the said body inenib'er; the saidring-likeseating-member of abrasion-resisting metal "and being'fforrned at'its inne'redge' with an integral downwardIy-and-outwardly directed attachingflange having its upper surface spaced downwardly'from'the adjacent under surface of the seating-member proper; the said hollow bodymember being provided at its upper end with a clamping-flange projetcing upwardly above its upper end, said clamping-flange being bent inwardly into the space between the under surface of the said flat seating-member and the upper surface oi the attaching-flange of the said fiat seatingimemb'er to clamp "the upper end of said body-member beneath the under surface of said attaching-flange whereby said fiat ring-like seating-'fnember overlies and protects the upper end of said hollow'body-member.

2, A bimetallic drainfitting, including in com- I binati n: abofd'y-mem ber formed of a different m etal' fromi the hereinafter mentioned seatingmember; ari'ng-like seating-member formed of abrasion-resistingmetal and surmounting and rigidly attached to the upper portion of the said body-member, the said flat ring-like seatingmernberbeing formed at its inner edge with an integral downwardlyand-outwardly directed at" tachi'n'gj-"fiangelhaving its upper surface spaced downwardly from theadjacent under surface of the seating-"memberp roper; the'said hollow bodyniember beingprovided at its upper end with an upwa'rdly facing"clamping shoulder which intersectsthe inner wall of said body-member and is surrounded by a clamping-flange projecting upwardly above said clamping-shoulder, said clamping fIan gebeingbent inwardly into the space between the underjsurface of the hat seating-member and the upper surface of its attaching-flange, to clamp the upwardly facing clamping-shoulder of said body-member beneath the under surface of saidiattaching-flange whereby said fiat ringlikeseating' memberoverlies and protects the upper end of said hollow body-member.

HOWARD F. REICHENBACH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS g Date 1,591,183 Reynolds July 6, 1926 1,709,324 Runser Apr. 16, 1929 

